Preformed expansion joint



Patented Apr. 15, 1930 UNITED STATES PATENT OFFICE ALBERT G. FISCHER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE PHILIP CAREY MANU- I'QCTUBING COMPANY, A CORPORATION OI OHIO rnnronmnn nxransron' JOINT Application filed March 25, 1925. Serial No. 18,830.

b means maybe ut lized in connection with my invention toeither' regulate the flow of the material or fibrous matter may be added or various particles of shredded paper, felt, roofing scrap, husk material, etc., may be 10 utilized eitherflin a penetrated or unpenetrated state.

My invention relates primarily to the peculiar uality of the compound and the mixtureto ring about the results described.

One of the objects of my invention is to provide a preformed expansion joint having a lower portion of non-oozing material and. a crown of differently colored material whereby the crown may beused either to harmonize with the color of the material of which the road is made, or, conversely may be utilized as a marking strip. In the latter instance the color of the crown will be in contrast to that 25 of the material of the roadway.

I I find it is desirable to present to the traffic also various colored materials which might be utilized as guide lines, warning lines, and which mi ht be used to harmonize the appearance of t e street. This cannot be accomplished readil with bituminous substances, and therefore itis necessary to construct combinations or other substances with waterproofed substances in order to present to the traiiic these various colored compositions as part of the marking'line, and which may become part of a pro-formed expansion oint.

This structure may be made up of an entire massof the ductile substance elastic at cooling temperatures, or it may be part of a crown or the entire crown or traflic edge of a pro-molded joint, said crown .or trafiic edge consisting of various colors of this elastic substance ductile at warmer temperatures. This crown may be either rolled 'intotplace by suitable machinery on the preforme expansion. 'oint base or it may be cemented to the preormed expansion joint base by any suitable means, preferably by cementing in a warm state to thebase material. The base material need not necessarily be limited to any particular type of construction, but should preferably be a non-oozing structure, so that 'tllie crown material will not be pushed out of p ace.

I therefore do not wish to be limited to any structure of the pre-molded material where a'combination of a crown and base is re-" quired.

For a better understanding of the" invention, reference will be made to the accompanying drawings, in which,

'Fig. 1 is a perspective view of a section of stri embodying my invention; and

, ig. 2 is a view of a paving section in which-the strip is inserted. Y

, Referring now to these drawings, the novel and improved product comprises generall a base Zand elastic crown or cap 3, preferably fabricated into a pre-formed unitary structure for insertion between rigid elements such as aving slabs 4 and 5.

ne method of producing this elastic substance ductile at warmer temperatures is by compounding with 25% rosin, 10% rubber, after cutting the rubber back with kerosene and using afillin material such as barytes, fullers earth, cellte, etc., and any suitable mineral" pigment to make-the necessary color. These preparations need not necessarily be observed but may be varied, for instance, the rubber may be added greatly in excess of 10%, the rosin proportionately decreased in quantity and likewise the filler. Likewise the mineral coloring pigment maybe increased or decreased as the case may warrant, or oldtires and vulcanized rubber may be added to the crude rubber which has een cut back b kerosene and a more elastic nature at coo ing temperatures imparted to the product.

I do not wish to be limited as to the degree of elasticit of this material as long as it becomes ductile at warmer temperatures. This ductility may occur at 150, 125, or even at temperatures of 200, and for incorporationof other materials, as high as 300.

While I have shown a certain specific embodiment for carrying my invention into ef-- fect, it is apparent that various changes may be made without departing from the spirit of the invention.

I claim:

1. A re-formed expansion joint consisting of a ituminous base material and a crown or wearing edge composed of rosin 30%, crude rubber 10%, Vulcanized. shredded rubber 15% and fillin material 45%.

2. A re-mo ded expansion joint consisting of a ituminous base and a wearing crown consisting of rosin 30%, crude rubber 10%, vulcanized. shredded rubber 15% and. filling material i575, mixed with suitable coloring matter,

15 3. A. composite pro-formed expansion joint adaptefl for insertion between the adjacent sections of a pavement and. consisting of a bituminous base portion and a crown portion of rubber material of contrasting color.

2 4%. A composite pre-formed'expansion joint adapted for insertion between adjacent sections of a avement and consisting of a bituminous ase portion anti an integral crown formed of a composition comprising rnlciber, resin, and a mineral coloring materia 5. A composite pro-formed expansion joint adapted for insertion between the sections of p a concrete Eavcment, and consisting of a 30 bituminous ass and an integral crown or wearing eolge comprising rubber, rosin, and a filler adapted to color the crown to contrast with the pavement inorder to provide a combined; marker and expansion joint.

BERT C. FISCHER. 

